Anyway, let me start by saying that these pads are weird. They are ugly, they feel kinda gross in your hand, and they are different from any headphone pad I have ever used. They are also fairly expensive, at more than $40 shipped. They came in simple packaging with instructions and a new set of foam disks to go over the driver.

Install was a bit of a pain, as it is hard to get the entire lip of the pad over the flange of the headphone, but after 5 minutes, I had it sorted. The original set of foam disks are held in by a ring, and I did not feel like trying to remove them. Also, I find the high end to be a little too much on my DT770 Pro/80s, so I just installed the new set of disks between the bottom of the gel pad and the foam retaining ring after I had the gels installed.

Pros and Cons:

+Isolation is much better than the stock pads
+Bass response is even stronger!
+Clamping pressure is very evenly distributed
+Noticeably better SQ all around (probably due to isolation)

-They look goofy
-My ears start to sweat just a bit after an hour

Overall, I am very happy with my purchase. I wear them at the office, and I really could not care less about what my co-workers think of my headphone aesthetics, and my ears sweat way less than they do in some other headphones.

I strongly recommend these for anyone looking to up the comfort quotient of their higher-end Beyers. I like them a lot more than the stockers and they seem like they will last forever.

They also have these pads in black, but according to the thread above, they have some kind of covering on them that make them feel terrible, so I went for the clear ones.

Honestly, I have not tried any leather pads, I have the clear gels and stock pads only. Assuming that the leather pads would feel like the foam from the stock pads covered in soft glove leather, don't see how the leathers could be better. The gel completely distributes the load on my head and seals perfectly, whereas the stock pads had a couple points where I could "feel" them. The gels feel...different, but are unbelievably comfortable. The only downside is the mild sweat they cause, but I would think the leathers would be similar in that regard.

Skylab, I think you need to try out a set of transparent gels...trade you for the deep-cups in your avatar?

Seriously though, I could probably lend them to you for a short while as long as they got back to me pretty quickly...